You Can Find Me Where The Sea Pours Into The Stars

Your heartfelt joy is never undeserved.

computer show me highly trained, highly knowledgeable, otherwise pragmatic characters twisting themselves into knots to rationalise their self-destructive tendencies

or simply Not Thinking About It

Asking myself the question, which primarchs would announce when they're going to go jerk off, just to come to the conclusion that most of them would within the right situation and with the right delivery. Guilliman, for example, wouldn't boldly yell about needing to go touch himself. He would, however, excuse himself from a conversation by mentioning that he has an appointment in his chambers he needs to attend. Meanwhile, Leman would absolutely just say he's gonna go beat his meat and do the gesture for emphasis